带有Segues，Core Data和Swift的UITableViewController的问题

Xcode 6.0.1，Swift iOS 8

我认为这是一个非常简单的设置，但我遗漏了导致问题的东西，或者是默认行为 .

我有以下内容：

标签栏控制器 - >导航控制器 - >表视图控制器 - 后续 - >表视图控制器

我将UIBarButtonItem'添加'按钮（addPlayerInformationDetail）连接到第二个表视图控制器 . 问题是当我通过segue推送控制器时，代码在错误的Table View Controller上运行，并且崩溃了 . 我明白为什么它会崩溃，但我不明白它为什么在第一个视图控制器上做某事 . 第一个表视图控制器也是NSFetchedResultsControllerDelegate .

第一个表视图控制器（PlayerInformationTableViewController）使用标准的表视图控制器锅炉代码 . 这是塞格呼唤的

override func prepareForSegue（segue：UIStoryboardSegue，sender：AnyObject？）{

if debug==1 {
        println("Running: ", reflect(self).summary.pathExtension,__FUNCTION__)
    }

    if segue.identifier == "addPlayerInformationDetail" {

       //Nothing to do at the moment

    } else if segue.identifier == "editPlayerInformationDetail" {

        var indexPath:NSIndexPath = tableView.indexPathForSelectedRow()!
        var vc                    = segue.destinationViewController as PlayerInformationDetailTableViewController
        vc.managedObjectID        = self.fetchedResultsController.objectAtIndexPath(indexPath).objectID
    }
}

这是所有方法的跟踪，我指出了代码返回第一个表视图控制器的位置：

(Running: , AppDelegate, managedObjectContext)
(Running: , AppDelegate, persistentStoreCoordinator)
(Running: , AppDelegate, managedObjectModel)
(Running: , AppDelegate, applicationDocumentsDirectory)
(Running: , AppDelegate, application(_:didFinishLaunchingWithOptions:))
(Running: , PlayerInformationTableViewController, viewDidLoad())
(Running: , PlayerInformationTableViewController, viewWillAppear)
(Running: , PlayerInformationTableViewController, numberOfSectionsInTableView)
(Running: , PlayerInformationTableViewController, fetchedResultsController)
(Running: , PlayerInformationTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationTableViewController, fetchedResultsController)
(Running: , PlayerInformationTableViewController, numberOfSectionsInTableView)
(Running: , PlayerInformationTableViewController, fetchedResultsController)
(Running: , PlayerInformationTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationTableViewController, fetchedResultsController)
(Running: , AppDelegate, applicationDidBecomeActive)
(Running: , PlayerInformationTableViewController, prepareForSegue(_:sender:))
(Running: , PlayerInformationDetailTableViewController, putABorderAroundButtons())
(Running: , PlayerInformationDetailTableViewController, viewWillAppear)
(Running: , PlayerInformationDetailTableViewController, refreshInterface())
newPlayer (Function)
(Running: , PlayerInformationDetailTableViewController, newPlayer())
(Ending: , PlayerInformationDetailTableViewController, newPlayer())

Why is it going back to PlayerInformationTableViewController???

(Running: , PlayerInformationTableViewController, numberOfSectionsInTableView)
(Running: , PlayerInformationTableViewController, fetchedResultsController)
(Running: , PlayerInformationTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationTableViewController, fetchedResultsController)


(Running: , PlayerInformationDetailTableViewController, numberOfSectionsInTableView)
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, numberOfSectionsInTableView)
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationDetailTableViewController, tableView(_:numberOfRowsInSection:))
(Running: , PlayerInformationTableViewController, tableView(_:cellForRowAtIndexPath:))
(Running: , PlayerInformationTableViewController, tableView(_:canEditRowAtIndexPath:))
(Running: , PlayerInformationTableViewController, configureCell(_:atIndexPath:))
(Running: , PlayerInformationTableViewController, fetchedResultsController)

点击添加按钮后（结束：，PlayerInformationDetailTableViewController，newPlayer（））完成为什么PlayerInformationTableViewController中的代码正在运行？我在Core Data中添加了一行，但它不应该与PlayerInformationTableViewController中的NSFetchedResultsControllerDelegate有任何关系 .

这是PlayerInformationDetailTableViewController中的代码流

override func viewWillAppear（animated：Bool）{

if debug==1 {
        println("Running: ", reflect(self).summary.pathExtension,__FUNCTION__)
    }

    refreshInterface()
}

func refreshInterface(){
    if debug==1 {
        println("Running: ", reflect(self).summary.pathExtension,__FUNCTION__)
    }

    if managedObjectID != nil {

        println("existingPlayer \(existingPlayer)")
        existingPlayer()
    } else {

        println("newPlayer \(newPlayer)")
        newPlayer()
    }
}

func newPlayer(){
    if debug==1 {
        println("Running: ", reflect(self).summary.pathExtension,__FUNCTION__)
    }

    //insert a new object in Core Data

    var newPlayerInformation = NSEntityDescription.insertNewObjectForEntityForName("PlayerInformation", inManagedObjectContext: managedObjectContext!) as PlayerInformation

    var newFirstName  = playerInformationFirstNameTextField.text
    var newLastName   = playerInformationLastNameTextField.text
    var newBirthPlace = playerInformationBirthPlaceTextField.text

    newPlayerInformation.firstName  = playerInformationFirstNameTextField.text
    newPlayerInformation.lastName   = playerInformationLastNameTextField.text
    newPlayerInformation.birthPlace = playerInformationBirthPlaceTextField.text

    if debug==1 {
        println("Ending: ", reflect(self).summary.pathExtension,__FUNCTION__)
    }
}

我希望我能正确地解释这一点，因为它真的令人沮丧，我确信这是我错过的一些简单的事情 . 如果我在func refreshInterface（）中输出// newPlayer（），则代码将返回到PlayerInformationTableViewController . 提前致谢 . -PaulS .